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6-sulfanylidene)-5-oxohexanoateethyl (S)-2-((tert-butoxycarbonyl)amino)-6-(dimethyl(oxo)-λ6-sulfanylidene)-5-oxohexanoate (S)-ethyl N-tert-butoxycarbonylpyroglutamate (S)-ethyl 2-(((tert-butoxy)carbonyl)amino)-6-diazo-5-oxohexanoate O-benzylhydoxylamine hydr°Chloride(2R,5R)-6-(benzyloxy)-7-oxo-1,6-diazabicyclo[3.2.1]°Ctane-2-carboxylic acid 海关参考信息
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专利信息
专利号:WO-2025027521-A1
优先权日:2023-08-01
标题 :An improved process for the preparation of avibactam and intermediate thereof
发明人:DHAVARIA SANDEEP; HANDA VISHAL; SHARMA SUNEEL KUMAR; MEHTA ANSHU KUMAR; SINGH ADITYA NARAYAN; ABUL AZIM; GUPTA NITIN; SINGH GOVIND; CABRI WALTER
权利人:FRESENIUS KABI ONCOLOGY LTD
摘要:The present invention relates to an improved process for the preparation of Avibactam or a pharmaceutically acceptable salt thereof, particularly the present invention relates to process for the preparation of a bridged ester intermediate of Formula I, wherein R1 is a hydroxy protecting group which is a key intermediate for Avibactam or a pharmaceutically acceptable salt thereof. The present invention also relates to the crystalline form of intermediates used for the synthesis of Avibactam or a pharmaceutically acceptable salt thereof. The invention also provides improved processes for the preparation of Avibactam or a pharmaceutically acceptable salt, using the bridged ester compound of formula I prepared by the process of the present invention.